Clinical trial Recruiting at 2 sites Interventional Ages 18 and up

Pulsed Field Ablation for Early Atrial Fibrillation Using a Balloon

Official title: PULSed Field Ablation for Atrial Fibrillation Using a Balloon for Early Intervention - Study - The "PULSE - Study"

Run by Asklepios proresearch · NCT07621003 · Data updated 2026-11-12

This study tests whether first-line pulsed field ablation with a balloon is better than usual care for adults with early atrial fibrillation who have not had ablation before.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment264 (estimated)
SponsorAsklepios proresearch
Industry-sponsored
Locations10 sites (Bad Oeynhausen and 9 other locations)
StatusRecruiting
StartedAugust 19, 2026
Main results expectedMarch 31, 2030
Study endsMarch 31, 2031
Registry record updatedOctober 6, 2026
Trial IDNCT07621003 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults (≥18) with early-stage paroxysmal or persistent AF diagnosed within the last 36 months who have not previously had AF ablation and meet the study’s inclusion criteria.

Probably not a fit

Patients unlikely to benefit include those with longer-standing AF (>3 years), prior AF ablation, or contraindications to ablation or anticoagulation therapies.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a prospective, multicenter, randomized trial comparing first-line pulsed field ablation (PFA) using a balloon to standard medical therapy in adults with symptomatic or asymptomatic early-stage paroxysmal or persistent AF (<3 years). The study uses an open-label design with blinded end-points and follows participants for 12 months. Eligible patients have no prior AF ablation and meet specific rhythm and medical criteria; key exclusions include longer-standing AF and certain comorbidities. PFA aims to selectively ablate myocardial tissue while minimizing collateral injury, potentially improving safety and efficacy compared with traditional thermal ablation or medical therapy. The trial is sponsored by Asklepios proresearch with collaborators and spans several European centers.

Why it matters

Potential benefit: If successful, patients may experience better rhythm control and potentially fewer AF-related symptoms and health care needs compared with usual care.

How similar studies have gone: Previous studies in early rhythm-control and balloon-based ablation have shown benefits of ablation over pharmacologic therapy in similar AF populations, supporting further investigation of PFA in this setting.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adults (≥18 years) with symptomatic or asymptomatic, paroxysmal or persistent atrial fibrillation
* First diagnosis of AF within the last 36 months
* At least one documented episode of AF on ECG, Holter monitoring, or eligible Smart Watch Device
* No prior catheter ablation for AF

Exclusion Criteria:

* Persistent AF \>3 years or longstanding persistent AF
* Previous AF-Ablation
* Ongoing continuous AAD therapy with Amiodarone at baseline
* History of failed continuous AAD therapy with \> 1 agent. Exceptions are Beta blocker, Verapamil or "pill in the pocket"-therapy
* Left Atrial Volume Index (LAVI) \> 50mL/m2
* Severe mitral regurgitation
* Contraindications to anticoagulation therapy
* Severe pulmonary or renal disease
* Pregnancy, active cancer disease
* Any condition or disease which is contraindication for AF ablation within 21 days or Anti-Arrhythmic Drug (AAD)

Where it's running

  • Arian Sultan
    Hamburg, Germany
    Recruiting
  • Lukas Krankenhaus Neuss
    Neuss, Germany
    Recruiting
  • HZD Bad Oeynhausen
    Bad Oeynhausen, Germany
    Not yet recruiting
  • Uniklinik Köln
    Cologne, Germany
    Not yet recruiting
  • Uniklinik Düsseldorf
    Düsseldorf, Germany
    Not yet recruiting
  • CCB Frankfurt
    Frankfurt, Germany
    Not yet recruiting
Show 4 more locations
  • Uniklinik Gießen
    Giessen, Germany
    Not yet recruiting
  • Marien Hospital Herne
    Herne, Germany
    Not yet recruiting
  • Leipzig Herzzentrum HZL
    Leipzig, Germany
    Not yet recruiting
  • Klinikum Nürnberg
    Nuremberg, Germany
    Not yet recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.